Bug 9447

Summary:	xfrm_state_lock: possible circular locking dependency detected
Product:	Networking	Reporter:	Rafael J. Wysocki (rjwysocki)
Component:	Other	Assignee:	Herbert Xu (herbert)
Status:	CLOSED CODE_FIX
Severity:	normal	CC:	herbert, mingo
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.24-rc	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	9243

Description Rafael J. Wysocki 2007-11-24 03:24:37 UTC

Subject         : xfrm_state_lock: possible circular locking dependency detected
Submitter       : Ingo Molnar <mingo@elte.hu>
References      : http://lkml.org/lkml/2007/11/23/103
Handled-By      : Herbert Xu <herbert@gondor.apana.org.au>

Comment 1 Rafael J. Wysocki 2007-11-24 03:26:02 UTC

Caused by:

commit 050f009e16f908932070313c1745d09dc69fd62b
Author: Herbert Xu <herbert@gondor.apana.org.au>
Date:   Tue Oct 9 13:31:47 2007 -0700

    [IPSEC]: Lock state when copying non-atomic fields to user-space

http://git.kernel.org/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=050f009e16f908932070313c1745d09dc69fd62b

Comment 2 Rafael J. Wysocki 2007-11-29 08:03:17 UTC

Please provide the commit ID and subject when the fix is merged.

Thanks!

Comment 3 Ingo Molnar 2007-11-29 08:11:32 UTC

> Please provide the commit ID and subject when the fix is merged.

Author: Herbert Xu <herbert@gondor.apana.org.au>
Date:   Mon Nov 26 19:07:34 2007 +0800

    [IPSEC]: Temporarily remove locks around copying of non-atomic fields

    The change 050f009e16f908932070313c1745d09dc69fd62b

        [IPSEC]: Lock state when copying non-atomic fields to user-space

    caused a regression.

Comment 4 Herbert Xu 2007-11-29 16:07:45 UTC

And the commit ID is 8053fc3de720e1027d690f892ff7d7c1737fdd9d.